<!DOCTYPE html>
<titile>picture</titile>
<head>
<meta charset="UTF-8">
<style type="text/css">
*{
margin: 0;
padding: 0;
}
#outer{
width: 500px;
margin: 50px auto;
padding: 10px;
background-color: burlywood;
text-align: center;
}
</style>
<script type="text/javascript">
window.onload=fuction()
{
//获取两个按钮
var prev=document.getElementById("prev");
var next=document.getElementById("next");
//保存图片路径
var imgArr=["tupian/1.jpg","tupian/2.jpg","tupian/3.jpg","tupian/4.jpg","tupian/5.jpg"];
//两个按钮的响应函数
prev.onclick=function(){
index--;
if(index<0){
index=imgArr.length-1;
}
img.src=imgArr[index];
info.innerHTML="一共"+imgArr.length+"张，当前第"+(index+1)+"张图片";
}
next.onclick=function(){
index++;
if(index>imgArr.length-1){
index=0;
}
img.src=imgArr[index];
info.innerHTML="一共"+imgArr.length+"张，当前第"+(index+1)+"张图片";
}
}
var index=0;
var img=document.getElementsByTagName("img");
var info=document.getElementById(info);
</script>
</head>
<body>
<div id="outer">
<p id="info"></p>
<button id="prev">前一张</button>
<button id="next">前一张</button>
<img src="tupian/1.jpg"></img>
</div>
</body>
<!--
发现以下问题：
1、window.onload=fuction() 写错了，是function
2、<titile>picture</titile> 错了是 <title>picture</title>
3、var img=document.getElementsByTagName("img"); js通过标签名获取对象是返回一个数组的，在
设置图片路径需要指定是数组下标img[0]=地址
4、文档的结构不完整
下面是修改好的，可以参考下
-->
<!DOCTYPE html>
<html>
<head>
<title>picture</title>
<meta charset="UTF-8">
<style type="text/css">
*{margin: 0;padding: 0; }
#outer{width: 500px;margin: 50px auto; padding: 10px;background-color: burlywood;text-align: center;}
</style>
<script type="text/javascript">
window.onload=function(){
//获取两个按钮
var prev=document.getElementById("prev");
var next=document.getElementById("next");
var index=0;
var img=document.getElementsByTagName("img");
var info=document.getElementById("info");
//保存图片路径
var imgArr=["tupian/1.jpg","tupian/2.jpg","tupian/3.jpg","tupian/4.jpg","tupian/5.jpg"];
//两个按钮的响应函数
prev.onclick=function(){
index--;
if(index<0){
index=imgArr.length-1;
}
img[0].src=imgArr[index];
info.innerHTML="一共"+imgArr.length+"张，当前第"+(index+1)+"张图片";
}
next.onclick=function(){
index++;
if(index>imgArr.length-1){
index=0;
}
img[0].src=imgArr[index];
info.innerHTML="一共"+imgArr.length+"张，当前第"+(index+1)+"张图片";
}
}
</script>
</head>
<body>
<div id="outer">
<p id="info"></p>
<button id="prev">前一张</button>
<button id="next">前一张</button>
<img src="tupian/1.jpg"></img>
</div>
</body>
</html>
你已开启陌生人防打扰，